The founder of 4Chan took the stage at SXSW to explain how his new project, Canvas, could far exceed the hilariously filthy meme-factory 4Chan's 12-million-user popularity with Facebook-friendly appeal.

The fantasy of buying a Slurpee with nothing more than a dramatic wave of your iPhone 5 may be an inevitable future. But like hydrogen cars and hoverboards, electronic wallet technology has a long, long way to go.